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. Author manuscript; available in PMC: 2011 Feb 4.
Published in final edited form as: Proc SPIE Int Soc Opt Eng. 2004;5368(2):534–541. doi: 10.1117/12.534568

Table 1.

Different simulation cases for data outside ROI.

Outside ROI Simulates condition with
Zero No data outside ROI
Uniform Estimated constant value outside ROI
Dose level outside ROI = 1/16 of original value Low dose acquisition outside ROI.
Dose level outside ROI = 1/256 of original value Very low dose acquisition outside ROI.